Plug adaptor



FIG. 1 is a front perspective view of a plug adaptor;

FIG. 2 is a back perspective view of the plug adaptor;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left elevational view thereof;

FIG. 6 is a right elevational view thereof;

FIG. 7 is a back plan view thereof; and,

FIG. 8 is a front plan view thereof.

The broken line portion of the figure drawings is included to showunclaimed subject matter only and forms no part of the claimed design.

We claim the ornamental design for a plug adaptor, as shown anddescribed.